Single and double storey extensions in Tottenham. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions throughout Tottenham, working with the bay-fronted Victorian and Edwardian terraces that fill the N17 streets around Wood Green and towards Finsbury Park. With more than 30 years in North London, we handle groundworks, steel, roofing and full fit-out, and guide you through Haringey planning where it applies.

The most requested project on a Tottenham terrace is the side-return infill, filling the narrow alley beside the rear closet wing to widen a cramped galley kitchen into a proper kitchen-diner. We dig and pour new foundations to building regulations depth, tie into the existing brickwork, and install a steel beam where the old external wall is removed, all signed off by building control.
Rear extensions off these Victorian and Edwardian homes work well too, and can be combined with the side return as a wrap-around. We match the stock brick and detailing so the addition sits comfortably against the period elevation, and set roof lights or a lantern over the deeper plan to keep the middle of the house bright, which matters on these long, narrow N17 plots.
Whether your Tottenham extension is permitted development or needs a full application to Haringey Council depends on the property. Many single storey rear extensions fall under permitted development rights, but corner plots, previous additions, an Article 4 direction or a conservation setting can remove those rights and require planning permission. We assess your specific house first and, where needed, prepare and submit the application for you.
Double storey and wrap-around schemes almost always need a planning application, and any extension still has to meet building regulations for structure, insulation, drainage and fire safety regardless of planning. Because the flank and rear walls of these terraces are shared, most extensions also trigger the Party Wall Act, so you serve notices to the neighbours either side and agree the position before the diggers arrive.
With GS Renovation you get one team from foundations to final decoration, so there is no gap between the groundworker, the steel and the finish. Our 30+ years across Tottenham and Haringey mean we know how these period terraces behave, how the council treats extensions locally, and how to keep an occupied home liveable while we build.
Punctual, worked hard, and did exactly what he was asked and what he said he would do. Overall, a very high quality job. Will use again.
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
I had a bathroom refit which I was very pleased with and I then went on to get my kitchen refitted as I was so happy with the way he worked. Even…
FAQ
Be careful, particularly if nobody has visited. Pricing house extensions for a Victorian and Edwardian terraced Tottenham house without seeing it is how a low figure becomes a high one halfway through, and the extras land at N17 when you have no leverage left. GS Renovation surveys, itemises and holds the total. A second opinion costs nothing and carries no obligation anywhere in Haringey. Call 07472 424 226 and we will look at the N17 quotation with you. As a rough guide, house extensions in London typically starts from roughly £40,000 for a single-storey rear extension and rises with size and specification (indicative London ranges, MyBuilder and Checkatrade, 2026). Your figure depends on the size, specification and condition of the property, which is why we survey before quoting.
More weeks than the structural work alone suggests. Once the beam or the opening is in at your N17 property, house extensions moves into plastering, decorating and sign-off, and that phase fills out the Tottenham programme. GS Renovation sets realistic dates rather than optimistic ones. Ring 07472 424 226 and we will give a range for a comparable Victorian and Edwardian terraced home in Haringey. The Haringey Council inspection dates are marked on the Tottenham programme from the outset.
We hand over, clear the site, and stay contactable. The house extensions work at an N17 address ends with a final Haringey Council inspection, the certificate you will need when the Tottenham property is sold, and a walk round with your project manager. GS Renovation then holds the five year guarantee on installations. Ring 07472 424 226 if anything needs looking at afterwards, anywhere in Haringey. Aftercare in Tottenham goes to the same Haringey team.
It can. The Community Infrastructure Levy applies above 100 square metres of new floorspace, though a residential extension to your own home usually qualifies for relief if it is claimed before work starts. Missing that claim is expensive, so we flag it early on Tottenham projects.
More demanding in places, but not harder for a team that works on them constantly. House extensions at an N17 address of that age needs proper investigation before design and more care in the finishing afterwards. GS Renovation allows for both in the Tottenham programme. The structural stage itself is usually no more complex than in a newer Haringey property. Ask on 07472 424 226 how house extensions runs on a comparable N17 house in Haringey.
It depends on the property. Many single storey rear extensions in Tottenham are permitted development and need only building regulations approval, but size limits, earlier extensions, corner plots or an Article 4 direction can require a planning application to Haringey Council. Double storey and wrap-around designs normally need permission. We check your specific N17 home before any work is priced.
Yes, Haringey in its entirety, not just Tottenham. House extensions projects run across the borough most weeks, so an N17 address is easy for us to reach and to return to for aftercare. GS Renovation coordinates Haringey Council building control throughout. Ring 07472 424 226 and we will confirm availability for your street. The survey that follows is free and carries no obligation. Small jobs and large ones are quoted on the same N17 basis.
Every Service, One Team
The same trusted team, 30+ years' hands-on experience and free, no-obligation quotes apply to every GS Renovation service in Tottenham. Explore what else we do locally:
Same Service, Nearby Areas
We carry out house extensions across Tottenham and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for house extensions in Tottenham. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.